GE Lighting 69135 Energy-Efficient Halogen 38-watt 520-Lumen PAR38 Spot Light Bulb with Medium Base, 1-Pack Uses 38-watts - 2850K soft white light appearance 520 lumens providing cozy, relaxing light Lasts 1.4 years based on 3 hours per day usage Estimated yearly energy costs 4.58 based on 3 hours per day 0.11 per kWh PAR38 indoor/outdoor spotlight with medium base for use in outdoor security lighting and indoor directional fixtures